In this article i will discuss about virtual reality topic for presenting good seminar by computer science students.
Virtual Environment (VE)
A computer generated world with which the user can interact
Interaction can vary from looking around to interactively modifying the world.
Classroom is a VE
What is virtual reality (VR)?
A computer generated, immersive (or wide field), multi-sensory information program which tracks a user in real time.
Trying to mimic real world
Immerse in 3-D visual world
Desktop (Window on a World)
What is Immersive VR?
In this type of VR in which the user becomes immersed (deeply involved) in a virtual world. It is also a form of VR that uses computer related components.
Types of Non-immersive VR
Text-based VR: when a reader of a certain text form a mental model of this virtual world in their head from the description of people , places and things.
Augmented VR: the idea of taking what is real and adding to it in some way so that user obtains more information from their environment.
Head Mounted Displays (HMD):
This was the first device providing its wearer with an immersive experience. Evans and Sutherland demonstrated a head-mounted stereo display already in 1965.
Keep track of position
• Inertial boxes
• Sonic Discs
Head trackers & body trackers
Binocular Omni-Orientation Monitor (BOOM)
BOOM is a head coupled stereoscopic display device. Screens and optical system are housed in a box that is attached to a multi-link arm.
Cave Automatic Virtual Environment (CAVE)
A room with projections on all walls, floor and ceiling
The users wear shutter glasses to get a 3D view of the world.
The users are able to move and control the environment with some kind of input mechanism
• Device in hand
Virtual reality Modeling Language (VRML)
Most exciting is the ongoing development of VRML on the World Wide Web. In addition to HTML (Hypertext Markup Language), that has become a standard authoring tool for the creation of home pages, VRML provides three-dimensional worlds with integrated hyperlinks on the Web. Home pages become home spaces.
Characteristics of VRML
• Not a programming language like c++ or java
• Descriptive (rather than procedural) like HTML
• File formats contains human readable and editable ASCII text
Engineering and Design
An area in which virtual reality has tremendous potential is in architectural design. Already being created are architectural "walk-through" that allow designers and clients to examine homes and office buildings, inside and out, before they're built. With virtual reality, designers can interactively test a building before construction begins.
a)Researchers are using virtual reality technology to create 3-D ultrasound images to help doctors diagnose and treat congenital heart defects in children
b)The medical application of VR was stimulated initially by the need of medical staff to visualize complex medical data, particularly during surgery and for surgery planning, and for medical education and training.
a)United States: The military used it as flight simulators to train pilots. b)National Aeronautics and Space Administration (NASA) use VR technology to construct a model of the Hubble Space Telescope (HST) .in September, 1993, approximately 100 members of the NASA HST flight team received over 200 hours of training using the VR...
HUD’s on cars
1999 10% of the world's computing power was non-human
2029 99% of the world’s computing capacity will be non-human
In the past, computing power has doubled approximately every 18 months, a trend that is known as Moore’s Law. If this is the case then we should have a computer powerful enough to run immersive VR programs in our own homes by the year 2037.